[Linux-cluster] "Inc" column description/semnification

[Lon Hohberger]

On Thu, 2008-07-31 at 10:04 +0300, Alex wrote:
> On Wednesday 30 July 2008 20:36, Lon Hohberger wrote:
> > On Wed, 2008-07-30 at 14:52 +0300, Alex wrote:
> > > Hello,
> > >
> > > What does it mean "Inc" column in the output of the cman_tool nodes
> > > command?
> > >
> > > [root at rs2 ~]# cman_tool nodes
> > > Node  Sts   Inc   Joined               Name
> > >    1   M      8   2008-07-30 11:03:12  192.168.113.5
> > >    2   M      4   2008-07-30 10:59:34  192.168.113.4
> > > [root at rs2 ~]#
> > >
> > > Can anybody tell me what represent 4 and 8 in Inc coulmn?
> >
> > Local incarnation # for the node, if I recall correctly.  They usually
> > do not match cluster-wide.
> 
> Because we know what is its name, let me ask you about Inc signification, how 
> can be interpreted and what represent 8 and 4 in above column... 8m, 8pps, 
> 8kbps, 8kv, womans, mans, aliens? In manual and documentation is absolutely 
> missing any info about Inc column!

I'm pretty sure it's the Totem protocol sequence # the local node
recorded for when it first "saw" the node.  The "Joined" time is the
same thing, except it's according to the local node's clock instead of
the Totem token sequence #.

That's all they are.  They don't indicate anything useful for
monitoring.


> And another question: why numbers in Inc column is changing everytime a node 
> is rebooted and remain constant till next reboot?

The sequence # is different the next time the node is "seen".  You'll
also notice the "Joined" value is different.

The "Inc" column and "Joined" column are set at the same time but are
not related to each other value-wise.

-- Lon